1200吨丙酮水连续填料精馏塔设计化工原理课程设计大学论文.doc

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1、化工原理课程设计1200吨丙酮-水连续填料精馏塔设计学院：化学生物与材料科学学院专业：化学工程与工艺设计人：二零一六年六月26设计任务一、设计题目设计分离丙酮-水混合液的填料精馏塔。二、设计数据及条件1、生产能力年处理丙酮-水混合液：1200吨（开工率：300/年）；2、原料组成丙酮含量为80%（质量百分率，下同），水含量为20%3、分离要求产品中水分含量≤4%（质量分数）残夜中丙酮含量≤4%（质量分数）4、设计条件操作方式：连续精馏操作压力：常压进料状态：饱和液体进料回流比：R=3.59塔填料：500Y金属孔板波纹填料塔顶冷凝器：全凝器三、设计计算

2、内容1、物料衡算2、填料精馏塔计算⑴操作条件的确定⑵塔径的确定⑶填料层高度的确定⑷填料层压降的计算⑸液体分布器设计计算⑹接管管径的计算3、冷凝器和再沸器的计算与选型4、填料塔结构图、填料结构图、填料支撑板结构图26摘要本设计任务是“1200吨丙酮-水连续填料精馏塔设计”。通过该课程设计，将在抗生素药物生产过程中的产生的废丙酮溶媒进行分离。对于二元混合物的分离，应采用连续精馏流程。设计中采用泡点进料，将原料液通过预热器加热至泡点后送入精馏塔内。丙酮常压下的沸点是56.2℃，故可采用常压操作，用30℃的循环水进行冷凝。塔顶上升蒸汽采用全凝器冷凝，冷凝液在

3、泡点下一部分回流至塔内，其余部分经产品冷却器冷却后送至储槽。因所分离的物系的重组分是水，故选用直接蒸汽加热方式，釜残液直接排出。丙酮-水物系分离的难易程度适中，气液负荷适中，设计中选用500Y金属孔板波纹填料。该设计说明书主要内容为：物料衡算、理论塔板数计算、精馏塔塔体工艺尺寸计算、填料层高度的计算、填料层压降计算、液体分布器分布点密度计算、精馏塔接管尺寸计算。在抗生素药物生产过程中的产生的废丙酮溶媒中由于含有大量丙酮，不能直接排放到环境中，如果进行丙酮回收，既可以降低生产费用，又能使废水排放达到生产要求。因此，将废丙酮回收，降低排放废水中的丙酮含量

4、，从而产生社会效益和经济效益，是一个很重要的课题。设计主要结果：理论塔塔板数为27，塔径为350mm，填料层分段高度为4m,填料层压降为3.3×10－3MPa,液体分布器布液点数为20。关键字：泡点进料;填料精馏塔;孔板波纹;设计计算26目录1.绪论······································································61.1课题背景································································61.2.1选择填料塔

5、的依据····················································61.2.2选择金属孔板波纹填料的依据··········································61.2精馏塔的选择依据························································62.设计方案及设计工艺流程确定·················································62.1工艺设计要求···················

6、·········································62.1.1进料要求····························································62.1.2分离要求····························································7262.1.3塔顶冷凝器设计要求··················································72.1.4液体分布器设计要求···············

7、···································72.1.5接管管径设计要求····················································72.2设计工艺流程····························································73.工艺过程设计计算···························································83.1填料精馏塔的物料衡算·······················

8、·····························83.1.1原料液及塔顶产品、塔釜产品的摩尔分率·